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Help- Progressive springs for small block

B

boatdetective

Tuned and Synch'ed
Joined
Dec 22, 2009
Messages
27
Location
Marblehead, MA
Hey there- I just got my FAC dampers and Wirth progressives!!! fitted everything up and... the springs don't fit in the fork tubes!? I miked everything up and found that the springs have a nominal OD of 1.025", while the tube ID is almost exactly the same as the springs or slightly under (yes folks- this is a case where good ole SAE is much more convenient to measure). The original springs were .90" - or approx. .5-.7mm slop. it seems the good people at Wirth measured the spring to the tube- with no clearance.

Anyone have a suggestion for an alternate progressive spring that does not cost $200 a set?? (Oh yeah- and that will fit)
 
Bought the springs and yss valves from Todd and installed on my 750 witn no problems. The difference is great the bike no longer dives under braking and sits much better in the corners. Shocks are next.
 
- and I got Wilbers.
Came with fork damper oil, spacers and fit right in.
 
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